Grinder.



P. A. mlm f -1 GRINDEE. APPLIDATIUN FILED AUG. 2. 1909.

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Hiltil FREDERICK A. WARD, 0F DETROIT, MICHIGAN, ASSIGNOR TO GEAR GRINDING MA- CHINE COMPANY, 0F DETROIT, MICHIGAN, AMCORPORATION 0F MICHIGAN.

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Specification of Iietters Patent.

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Application tiled August 2, 1909. Serial No. 510,696.

To all whom it may concern: I

Be it known that I, FREDERICK A. Villino, a citizen of the United States of America,

residing at Detroit, in the county of Wayne and State-of Michigan, have inventedcertain new and useful Improvements in Grinders,` of which the following 'is a specification,`

easily exchanging the grinders, and at the,

saine tune for accurately positioning said grinders while in work to rotate-in a con-V r hub or' the pulleg;I and the bearing but the sta'nt plane.

' .To this end, the invention consists in the construction as hereinafter set forth.

in the drawingsf-Figure 1 is a longitudinal section in the plane of the grinder arbor; and Eigig. 2 is a cross section thereof, on line X- For certain classes ont worksuch as for gear grindingit is necessary that the grinder wheel should be positioned with great accuracy; andit is also necessary to frequently exchange the-wheels to suit the requirements of the work. With the present invention, I have accomplished the desired result by the following construction: A is the frame, which carriesthe grinder wheel B, and C C are bearings for the grinder arbor secured to said frame upon oppositeY sides of the wheel. The arbor, to which the wheel is secured, is 'formed in two tubulaisections D D, which are respectively journaled in bearings C C and extend beyond.

thefsame for engagement with the drive `pulin addition to the tubular sec-v tions D D', a shaft F otluniform diameter l leys E E.

extends thrugh said tubes and the grinder Wheel.

With the construction as thus far described, it will be understood that to mount and dismount the grinder wheels7 it is only necessary to remove the shaft F, without uisturhing the tubular arbore D D or the drive pulleys E l. lt is, however, necessary to hey or otherwise secure the grinder wheel to rotate with the arbors, and this is accomplished by a in G', which engages a bore in the hub H ot the wheel, and has projecting ends which engage with the recesses l in the flange J on the arbor sectionsl) D. The flanges J also form clamps tor the hub H which are drawn together -by providing end bearings for one of the arbor sections, which are adjustable to take up. all wear or lost mo tion. llfhese, as shown, consist of washers L and M, upon opposite ends of the journal C', the washer L being arranged between the flange J and said bearing, and the washer M between the bearing and the hub oil the drive i pulleys E". Adjustment is edected by the nut N on a threaded end of the arbor section D', while the lock nut O holds the nut N from change 'of position. 4At the opposite end,`similar loch'. nuts N and 0" are provided for taking up lost motion between the Thus the washers L and are omitted.

wheel will. bepositioned with relation to the o'f bearings upon opposite sides thereof,

tubular arbor sections journaled in said bearings and spaced to receive the wheel,

and a` central shaft insertible through said tubular arbors and the hub ot the wheel.

2.' The combination with a grinder wheel, of' journai bearings upon opposite sides of said wheel, tubular arbor sections jourinsertion of the wheel therebetween, a shaft insertible through Ysaid tubular arbor sec tions "and the h'ub of the wheel, and leans for clamping said shaft and arbor 'stldtions together.

3. `The combination with a grinder wheel,4

on their inner ends s aced from each other to receive the hub of t 1e wheel therebetween,

lnai'ed in said bearings and spaced for'the i sections and the hub of a vshaft insertible through Said arbor sec- 'tions and the hub of the Wheel, and a nut engaging' a threaded end of the shaft for clamping the anges of said arbor sections against the hub of the Wheel.

5. The combination with a grinder Wheel, of journal bearings on opposite sides of said Wheel, tubular arbor sections journaled in said.'bearings and extending beyond the same, drive pulleys mounted on the eXtensions of said arbor sections,'a hub for the wheel insertible between the inner ends of said arbor sections, a key carried by said hub laterally engageable with said arbor sections, arbor sections and the hub of said wheel for securing the parts in operative relation.

6. The combination with a grinder Wheel, of journal bearings on opposite sides of said Wheel, tubular arbor sections journaled in said bearings and extending beyond the same, end bearings for one of said arbor sections en aging the. journal bearing therefor, a sha 't insertible through said arbor the grinder Wheel, said shaft and.op

and means for clamping said arbor section posite arbor section to having the end bearings.

7. The ombination with a pair of permanently positioned drive pulleys, of a and a shaft insertible through' said4 sew/73 8. The combination with a pair of permanently positioned drive pulleys, of a grinder Wheel intermediate said pulleys,

and a shaft on which said Wheel is mounted, detachably enoaging said pulleys.'`

The com ination with a pairof permanently journaled drive pulleys, of an arbor driven 'by said pulleys, a grinder wheel, and means tachably onsaid arbor, the wheel being removable from the latter without affecting the positions of'said pulleys.

10. The combination with a pair of drive pulleys, of arbor sections driven by the respective pulleys, posed between said arbor sections and driven thereby.

11. The combination of driving pulleys arranged Vside by side, arbor sections driven by the respective pulleys and extending toward each other, and a grindervvheel interposed between said sections.

In testimony whereof I aiix my signature in presence of two witnesses.

FREDER'IQIQA. WARD. Witnesses:

W. JBnLKNAP, HARRY W. GRAHAM.

to mount said Wheel de.

and aigrinder wheel inter- 

